\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Soient \(\pi_0 = \begin{pmatrix} 0{,}6 & 0{,}4 \end{pmatrix}\) et \(M = \begin{pmatrix} 0{,}7 & 0{,}3 \\ 0{,}2 & 0{,}8 \end{pmatrix}\). Que vaut \(\pi_1\) ?